title: Ten-year treatment outcomes including blood cell count disturbances in patients with simple renal cysts.
abstract: BACKGROUND
  The simple renal cyst is the most common benign kidney disease. It may cause pain and hypertension, especially if significantly enlarged. As in polycystic kidney disease, blood cell count disturbances are frequently observed in simple renal cysts. The aim of our study was to assess such disturbances, changes in blood pressure, and complication rate in our patients undergoing surgery due to simple renal cyst in the last 10 years.
  
  
  METHODS
  210 patients with simple renal cysts were underwent surgery between 2002 and 2012. Two different kinds of operation were conducted: aspiration of cyst fluid with injection of sclerosing agent, and laparoscopic/retroperitoneoscopic decortications of the cyst wall. A control group comprised 134 patients with benign prostate hyperplasia. The following data were obtained: cyst burden, hematocrit, hemoglobin, red blood cells, thrombocytes, occurrence of pain, and blood pressure before and after the operation. Complications were collected and presented in Clavien score.
  
  
  RESULTS
  Hematocrit, hemoglobin, and red blood cells were significantly increased in the experimental group. A positive correlation was observed between cyst burden and the parameters mentioned above. Of 91 patients with hypertension, 56 (61.7%) had blood pressure reduction after the operation. Treatment relieved the loin pain in 132 (88%) patients. Complications occurred in 15 (7.4%) patients.
  
  
  CONCLUSIONS
  Patients with simple renal cysts have high values of red blood cells, hematocrit, and hemoglobin. Treatment decreases blood pressure in patients with hypertension. Complications after treatment are rare and mild.
authors.affiliation: Department of Urology in Zabrze, Medical University of Silesia in Katowice, Katowice, Poland. piotr.bryniarski@hotmail.com
authors.forename: Piotr
authors.initials: P
authors.lastname: Bryniarski
authors.forename: Zbigniew
authors.initials: Z
authors.lastname: Kaletka
authors.forename: Marcin
authors.initials: M
authors.lastname: Życzkowski
authors.forename: Grzegorz
authors.initials: G
authors.lastname: Prokopowicz
authors.forename: Bartosz
authors.initials: B
authors.lastname: Muskała
authors.forename: Andrzej
authors.initials: A
authors.lastname: Paradysz
mesh_terms: D000368:Aged; D001772:Blood Cell Count; D001792:Blood Platelets / Q000378:metabolism; D001794:Blood Pressure; D015992:Body Mass Index; D016022:Case-Control Studies; D003404:Creatinine / Q000097:blood; D005260:Female; D005919:Glomerular Filtration Rate; D006400:Hematocrit; D006454:Hemoglobins / Q000378:metabolism; D006801:Humans; D052177:Kidney Diseases, Cystic / Q000097:blood* / Q000503:physiopathology / Q000628:therapy*; D008297:Male; D011182:Postoperative Care; D011300:Preoperative Care; D013997:Time Factors; D016896:Treatment Outcome
chemical_list: D006454:Hemoglobins; D003404:Creatinine